Home | PTFE Flat Washers - Non-Stick, Chemical-Inert Sealing Washers

PTFE Flat Washers - Non-Stick, Chemical-Inert Sealing Washers

PTFE flat washers provide unmatched chemical inertness, a non-stick surface, and excellent performance across a wide temperature range-making them the preferred choice for chemical processing, food and pharmaceutical equipment, and applications requiring a non-contaminating sealing washer. Superior Washer & Gasket Corp manufactures PTFE washers in standard and custom sizes.

Our ISO 9001:2015 certified plastic washer manufacturing includes PTFE, PTFE-filled, and other fluoropolymer washers. We supply PTFE flat washers from stock inventory and produce custom PTFE washers to your exact OD, ID, and thickness-all made in the U.S.A. with consistent material quality.

  • Full chemical inertness and non-contaminating properties
  • Wide temperature range performance
  • Standard and custom PTFE flat washer sizes
  • ISO 9001:2015 certified quality management
  • Made in the U.S.A.

Showing 351–365 of 365 products

SKU ID OD Thickness Material ID TOL OD TOL Quantity

550-86-016

ID 0.125
OD 0.218
Thickness 0.016
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-87-031

ID 0.125
OD 0.24
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-88-010

ID 0.125
OD 0.25
Thickness 0.01
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-88-016

ID 0.125
OD 0.25
Thickness 0.016
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-89-031

ID 0.125
OD 0.281
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-90-031

ID 0.125
OD 0.312
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-91-031

ID 0.125
OD 0.328
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-92-062

ID 0.125
OD 0.375
Thickness 0.062
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-93-031

ID 0.125
OD 0.39
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-94-016

ID 0.129
OD 0.187
Thickness 0.016
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-95-016

ID 0.129
OD 0.218
Thickness 0.016
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-96-016

ID 0.129
OD 0.25
Thickness 0.016
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-97-031

ID 0.129
OD 0.281
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-98-031

ID 0.129
OD 0.312
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

550-99-031

ID 0.129
OD 0.343
Thickness 0.031
Material PTFE
ID TOL +-.005
OD TOL +-.005
Quantity

PTFE Flat Washer Frequently Asked Questions

Below are answers to some of the most common questions about PTFE flat washers.

What are PTFE flat washers?
PTFE flat washers are manufactured from polytetrafluoroethylene (PTFE), commercially known as Teflon. PTFE has the lowest coefficient of friction of any solid material, near-universal chemical inertness, and a usable temperature range from cryogenic to approximately +500 degrees F (+260 degrees C). These properties make PTFE washers the first choice for chemical, pharmaceutical, semiconductor, and food processing applications.

What makes PTFE unique compared to other plastic washer materials?
PTFE is virtually chemically inert, resistant to almost every chemical including concentrated acids, bases, and solvents that attack other plastics. It is also non-stick, non-conductive, non-magnetic, FDA compliant, and biocompatible. No other plastic material combines all of these properties in a single material.

What are the limitations of PTFE washers?
PTFE has relatively low compressive strength and tends to cold flow (creep) under sustained load, which can cause loss of clamping force over time in high-stress fastener joints. For applications with high clamp loads, glass-filled or carbon-filled PTFE compounds offer improved creep resistance while retaining most of PTFE's chemical resistance.

Can you make custom PTFE flat washers?
Yes. Superior Washer manufactures custom PTFE washers to your OD, ID, and thickness specifications in virgin PTFE and filled grades. Contact us via the Quick Quote form or by phone.

Are your PTFE flat washers made in the USA?
Yes. All PTFE flat washers are manufactured in the United States under our ISO 9001:2015 certified Quality Management System. Material certifications are available upon request.

PTFE is one of several chemically inert plastics we manufacture. Take a look at the full flat washers collection to find the right material for your project.